How do you control the banana bunchy top virus?
How do you control the banana bunchy top virus?
Control of banana bunchy top is achieved by killing the banana aphids then destroying all infected material. First, the aphids should be killed on the infected banana material, and then all the plant material should be destroyed to prevent the spread of the virus.
What are the symptoms of BBTV disease?
|Symptoms on banana||Yellowing and curling of leaf margins on BBTV-infected banana.|
|Symptoms on banana||Stunted plants arising from infected suckers.|
|Symptoms on leaf (detail view)||Dark green ‘dot-dash’ patterns in minor leaf veins forming ‘hooks’ where they enter the edge of the midrib.|
How do you treat BBTV?
When treating for BBTV it is very important to kill both infected plants and the aphids that transmit the virus. Aphids can be treated with most contact insecticides. Make sure to soak the plant thoroughly so that the insecticide gets underneath the petiole where aphids like to hide.
How do bananas respond to BBTV?
Banana leaves infected with BBTV have dark green streaks along the small veins on the underside of the leaf. The streaks consist of dots and dashes in a Morse code pattern which form J-shaped hooks where they join the midrib (Figure 2).
Is the vector of bunchy top of banana?
INTRODUCTION: Banana bunchy top disease (BBT) is one of the most serious diseases of banana. It stunts the plants and reduces yield severely. The disease is caused by Banana bunchy top virus (BBTV), which is transmitted by banana aphids (Pentalonia nigronervosa Coquerel).
What is the common planting distance of banana?
Experiments carried out recently show that good quality banana and heavy bunch can be achieved by keeping the planting distance at 1.8 X 1.8 m. However, to get maximum yield plantation is done at 1.2 X 1.5 m. High Density Planting : High density planting is in practice to accommodate 4444 to 5555 plants per ha.
What is the first symptom of BBTD?
The initial symptoms of banana bunchy top virus consist of dark green streaks in the veins of lower portions of the leaf midrib and the leaf stem (petiole). The streaks also occur, but are less prominent, in the veins of the leaf blade (lamina).
What are the diseases of banana?
Banana: Diseases and Symptoms
- Panama wilt.
- Mycosphaerella leaf spot, yellow sigatoka, black sigatoka.
- Moko disease/bacterial wilt.
- Tip over or bacterial soft rot.
- Bunchy top/curly top.
- Banana bract mosaic virus (BBMV)
- Banana streak disease (BSV)
What is the vector of bunchy top of banana?
Which is banana season?
Four months of monsoon (June to September) with an average 650-750 mm. rainfall are most important for vigorous vegetative growth of banana. At higher altitudes, banana cultivation is restricted to a few varieties like ‘Hill banana”.
Which climate is suitable for banana?
Banana plants like warm and wet conditions, along with fertile soils. They grow best in the tropics, with an average temperature in the high-20s Celsius, and can be found in plantations in a wide band between 30 degrees north and south of the equator.
What is the banana disease?
Panama disease, also called banana wilt, a devastating disease of bananas caused by the soil-inhabiting fungus species Fusarium oxysporum forma specialis cubense. A form of fusarium wilt, Panama disease is widespread throughout the tropics and can be found wherever susceptible banana cultivars are grown.
What are the symptoms of banana bunchy top?
There are no resistant varieties, so controlling the spread by vectors and plant materials are the only management methods. Symptoms include spotting any deformed plant appearance. Banana bunchy top disease affects the banana fruit and foliage, and is caused by a single-strand DNA virus, the banana bunchy top virus.
How did the banana bunchy top virus get its name?
Banana bunchy top is a viral disease caused by a single-stranded DNA virus called the Banana Bunchy Top Virus (BBTV). It was first identified in Fiji in 1891, and has spread around the world since then. Like many viruses, BBTV was named after the symptoms seen, where the infected plants are stunted and have “bunchy” leaves at the top.
What kind of virus does a banana plant have?
Banana bunchy top virus (BBTV) is a plant pathogenic virus of the family Nanoviridae known for infecting banana plants and other crops.
How long does it take for banana bunchy top virus to retransmit?
Disease cycle. Acquisition of the virus by the banana aphid requires about 18 hours of feeding and then the aphid can retain the virus for approximately two weeks. The retransmission of this virus can happen after as little as two hours of feeding on a healthy plant however it takes about a month for the BBTD symptoms to appear after infection.
How do you control the banana bunchy top virus? Control of banana bunchy top is achieved by killing the banana aphids then destroying all infected material. First, the aphids should be killed on the infected banana material, and then all the plant material should be destroyed to prevent the spread of the virus. What are…